A new approach to generating quantum-entangled photon pairs uses nonlinear metasurfaces to enhance and tailor photon emissions. The researchers achieved a five-order-of-magnitude increase in the brightness of entangled photons, with a highly configurable platform that can control entanglement and direction.
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A Russian-U.K. research team has proposed a theoretical description for the new effect of quantum wave mixing involving classical and nonclassical states of microwave radiation. The study builds on earlier experiments on artificial atoms, which serve as qubits for quantum computers and probes fundamental laws of nature.
Researchers used quantum computers to study polymer models by recasting them as optimization problems, exploiting the machine's efficiency in solving such tasks. This approach enables harnessing the potential of quantum machines in a hitherto unexplored context.
Researchers from USTC demonstrate the quantum statistics and contextuality of parafermion zero modes using a multi-mode Mach-Zehnder interferometer. The fidelity of the braiding operation reaches 93.4%, enabling a fault-tolerant quantum gate.
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Researchers at the University of Bonn developed a method to visualize laser beams in a vacuum, allowing for precise alignment of individual atoms. This breakthrough enables faster and more accurate quantum optics experiments, potentially leading to advancements in computing and materials science.
Scientists detected electronic and optical interlayer resonances in bilayer graphene by twisting one layer 30 degrees, resulting in increased interlayer spacing that influences electron motion. This understanding could inform the design of future quantum technologies for more powerful computing and secure communication.
Researchers create transistors with an ultra-thin metal gate grown as part of the semiconductor crystal, eliminating oxidation scattering. This design improves device performance in high-frequency applications, quantum computing, and qubit applications.
A UC Riverside materials scientist has received a $2 million grant to improve the scalability of quantum computers, allowing them to operate at room temperature. The project aims to create design guidelines and manufacturing strategies for hybrid organic-inorganic structures that can produce quantum computers on a larger scale.
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Researchers at University of Illinois and Argonne National Laboratory will explore magnetic materials to reduce noise in quantum computing hardware. The team aims to design non-reciprocal circuitry by harnessing magnetic features, which could lead to a hybrid device for sensing and communication applications.
Quantum engineers at the University of New South Wales have discovered a new technique to control millions of spin qubits, a critical step towards building a practical quantum computer. This breakthrough uses a novel component called a dielectric resonator to focus microwave power and deliver uniform magnetic fields across the chip.
The DTU researchers have developed a universal measurement-based optical quantum computer platform, enabling the execution of any arbitrary algorithm. The platform is scalable to thousands of qubits and can be connected directly to a future quantum Internet.
Researchers at NIST have created a quantum crystal sensor that can measure electric fields with unprecedented sensitivity, potentially revolutionizing dark matter detection. By entangling the mechanical motion and electronic properties of tiny ions, the sensor can detect subtle vibrations caused by dark matter particles.
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EPFL professor Giuseppe Carleo and graduate student Matija Medvidović have developed a method to simulate the behavior of variational quantum algorithms on classical computers. This approach uses machine-learning tools to emulate the inner workings of a quantum computer, setting a new benchmark for future development of quantum hardware.
A new $2.7 million grant from the US Department of Energy will support a three-year research effort to identify and store quantum information in solids, enabling significant advancements in quantum computing. The project aims to build a database of viable qbits by analyzing defects in solids.
Scientists at Argonne National Laboratory have devised a unique means of achieving effective gate operation with electromagnonics. They can rapidly switch between magnonic and photonic states over a period shorter than the magnon or photon lifetimes, enabling real-time control of information transfer.
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Researchers from NUS have developed two methods to ensure QKD communications cannot be attacked using side-channel attacks. The first is an ultra-secure cryptography protocol that can be deployed in any communication network, and the second is a device that defends against bright light pulse attacks by creating a power threshold.
Scientists investigated full-shell semiconductor-superconductor nanowire structures for evidence of Majorana bound states, but found no confirmation. Instead, zero-bias peaks were attributed to Andreev bound states, which can mimic Majorana modes.
Jin Hu, a physicist at the University of Arkansas, received a prestigious Early Career Research Program award from the US Department of Energy to advance research into novel topological quantum materials. His five-year award will support studies on crystal growth, characterization and various measurements in high field, low temperature...
Quantum nonlocality is a universal property that prevails regardless of particle speed or indeterminacy. Researchers designed an experiment to test this phenomenon, using the principle of physical phenomena being independent of frame of reference, to prove nonlocality for any quantum particle.
Researchers from Rensselaer Polytechnic Institute demonstrate a new structure of correlated insulating state in TMDC materials, enabling greater control over excitons. This breakthrough is crucial for developing quantum emitters needed for future quantum simulation and computing.
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Scientists have successfully transferred and recovered quantum coherence from photons scattered in free-space for the first time, paving the way for new applications in quantum communication, imaging, and sensing. The novel technique uses custom hardware to maintain coherence even after scattering from a diffuse surface.
A new experiment demonstrates the stability of quantum interactions between coupled atoms under electron bombardment. The findings suggest that special quantum states may be realized in quantum computers more easily than previously thought.
Researchers have successfully demonstrated direct observation and measurement of quantum entanglement at a macroscopic scale using vibrating membranes. This breakthrough enables the extension of measurements to larger systems, with potential implications for quantum computing and fundamental physics research.
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Assistant Professor Robert Fickler and Doctoral Researcher Markus Hiekkamäki demonstrated near-perfect two-photon interference control using spatial photon shape. The method holds promise for building new linear optical networks and developing quantum-enhanced sensing techniques.
Prof. Dr. Piet O. Schmidt receives EU funding to explore fundamental questions of modern physics, aiming to improve limits for new forces and changes in natural constants. His team plans to develop novel measurement methods using highly charged ions.
A team of scientists has demonstrated atom interferometry on a sounding rocket, enabling precise measurements of gravity and potentially detecting gravitational waves. The success of this experiment marks a significant milestone in the field of quantum technologies.
A multidisciplinary team of scientists has developed a new way to detect phase transitions in raw data by analyzing its intrinsic dimension, a statistical property that reveals collective properties of partition functions. This method is agnostic and does not require prior knowledge of the system's parameters.
Researchers at Purdue University have addressed an issue that was barring the development of quantum networks. By deploying a programmable switch, they can adjust how much data goes to each user by selecting and redirecting wavelengths of light carrying different data channels. This allows for the increase in users without adding to ph...
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Scientists at Cornell University have successfully created a material structure that simultaneously exhibits superconductivity and the quantum Hall effect. This breakthrough could enable the development of more efficient electronics, such as data centers cooled to extremely low temperatures.
An international team of experts has demonstrated that only quantum gravity can create a specific ingredient needed for quantum computation. The proposed experiment involves cooling billions of atoms to extremely low temperatures and applying a magnetic field, which would reveal the underlying gravity if it's quantum.
Physicists have produced kagome graphene, a carbon-nitrogen compound with unusual electrical properties, including semiconducting behavior that can be switched on and off. The material's unique structure and strong electron interactions could lead to the development of sustainable electronic components.
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Researchers at the University of Vienna demonstrated a new approach to reduce noise in quantum communication schemes by sending particles along multiple paths simultaneously. This method, which utilizes quantum superposition, offers improved noise reduction and has been experimentally confirmed.
Danna Freedman, a Northwestern University professor, presents a novel approach to quantum chemistry, enabling the creation of next-generation quantum technology. Her research challenges the assumption that molecules are too complex to study effectively, paving the way for new understandings.
Researchers have developed a new method to detect Majorana zero modes in one-dimensional quantum nanowires, overcoming previous detection difficulties. This breakthrough improves device reproducibility and opens the door for scalable quantum computing applications.
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A team of physicists from the University of Trento has developed a method to compute changes in protein shape and trajectory using quantum computers. This technology has implications for understanding neurodegenerative processes and developing new treatments.
Researchers at the University of Bonn used ultracold atoms to study magnetic orders in coupled thin films, finding that correlations competed with original order. The study provides new insights into novel quantum phenomena and their potential applications in quantum computing and superconductors.
Researchers from the University of Pittsburgh have created a serpentine path for electrons, changing their properties and giving rise to new behavior. The work uses a nanoscale sketching technique to engineer spin-orbit interactions, which could be useful in future quantum technologies.
Scientists have successfully detected a topological Kosterlitz-Thouless (KT) phase in the rare-earth magnet TmMgGaO4 using highly sensitive nuclear magnetic resonance and magnetic susceptibility measurements. The experiment confirms long-held theoretical predictions, marking a significant breakthrough in understanding the behavior of q...
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Scientists have found a way to characterize the degree of quantumness in physical systems, which is essential for understanding quantum computing and sensing advantages. By analyzing extrema states, researchers identified a mathematical representation called Majorana constellation, which covers more of the sphere as quantumness increases.
A USask physicist is leading a world-first collaboration to develop a compact, precise magnetometer using diamond-based technology. The new device has potential applications in geological prospecting, medicine, and quantum computing.
Researchers from University of Bristol's QET Labs developed a tiny device that measures quantum features of light at record high speeds. This achievement promises novel routes to outperform current state-of-the-art in computing, communication, and measurement.
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Scientists have successfully produced and studied a quantum spin liquid (QSL) in a new material called EDT-BCO. The QSL emerges due to the unique structure of the material, which includes triangularly organized dimers and sublattice of carboxylate anions.
Scientists at University of Rochester and Cornell University have developed a nanoscale node made of magnetic and semiconducting materials that can interact with other nodes using laser light. The device uses entanglement, a phenomenon in quantum mechanics, to connect quantum nodes across a remote network.
A joint research group has developed a way to simulate the quantum physical properties of complex solid state systems using real systems of atoms. The team's approach uses mathematical and numerical methods to investigate which quantum systems are suitable for simulations, paving the way for progress in robust quantum computing.
A joint research team has solved the puzzle of non-Fermi liquid behaviour in interacting electrons systems through quantum many-body computation and analytical calculations. The findings provide a protocol for establishing new paradigms in quantum metals, with potential applications in solving the energy crisis.
A University of Reading mathematician is collaborating with Microsoft to study ancient mathematical problems, including Diophantine equations, to aid in the development of encryption software. The project aims to create more secure data protection against quantum computers that can solve complex mathematical problems quickly.
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A multidisciplinary research team led by Columbia University is developing a quantum simulator to tackle real-world challenges. The project, funded by a $1 million NSF Convergence Accelerator award, aims to create a device that can solve problems difficult for classical computers.
Topological insulators exhibit unusual quantum phenomena due to their electrically conductive surface and insulating interior. A recent study revealed the relationship between the magnetic properties and electronic band structure, finding that the Dirac cone gap closes with increasing temperature, contradicting previous theories.
A team of scientists has developed a novel type of quantum emitter formed from spatially separated InGaN monolayer islands. The isolated islands exhibit high photostability and can be spectrally filtered to act as bright, fast single photon emitters at a wavelength of ~400 nm.
Researchers from Lancaster University found that exotic particles stick to all surfaces in the superfluid, enabling objects to move at high speeds without destroying the fragile state. This discovery may guide applications in quantum technology and quantum computing.
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Researchers validate the Kibble-Zurek mechanism in quantum magnetic systems and demonstrate its applicability to open quantum systems using commercially available D-Wave annealers. The study provides strong experimental evidence for the generalized theory, showcasing the potential of quantum annealers in exploring nonequilibrium physics.
Archana Kamal, a UMass Lowell physics professor and expert on quantum information technologies, will co-present a free TEDx talk on the next quantum revolution. The event features prominent women experts in various fields, including science, technology, education, and business.
Researchers demonstrated new methods for controlling spin waves in nanostructured materials, enabling energy-efficient information transfer and quantum computing applications. They achieved this by exciting magnons with short laser pulses, allowing precise control over spin wave parameters.
Researchers developed a framework to analyze entropy in quantum systems, allowing for control over measurements and improving the quality of quantum computer readouts. The study demonstrates the importance of understanding the link between thermodynamics and quantum measurements.
Researchers from Kazan Federal University developed a quantum algorithm to solve the Dyck problem, which is crucial for parsers and compilers. The new algorithm can solve the problem in just 40 seconds on a quantum computer.
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Researchers at City College of New York create topological magnetic superlattice material that can conduct electrical current without dissipation and lost energy. The discovery has the potential to advance energy-efficient technologies and enable topological superconductivity.
A new mathematical procedure minimizes the sign problem in quantum Monte Carlo method, reducing computational time for solid-state systems. This approach enables faster development of materials with special spin properties.
Buckled graphene mimics colossal magnetic fields, altering electronic properties for novel quantum materials and superconductors. Researchers discover dramatic changes in material's behavior at extremely low temperatures.
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Researchers have developed a quantum algorithm that can diagnose noise in large quantum systems, enabling the creation of more reliable and scalable quantum computers. The algorithm was tested on a 14-qubit machine and discovered correlations not previously detected.
Scientists have found that quantum particles can carry unlimited information about interacted objects, enabling precise measurements. Researchers developed a new technique using quasi-probabilities to improve metrology, leading to potential breakthroughs in super-precise microscopes and quantum computers.